The Command Access ML1 (L9000) retrofit series mortise lock utilizes a high quality Grade 1 chassis built to withstand years of use. You can install this lock with the confidence of knowing that the ML1 carries our top tier features, options, and specifications. The ML1 allows for field handing, it is field reversible (EL/EU), and it comes with a 3 year no hassle warranty. This mortise lock retrofits any Schlage L series compatible trim and may be purchase as chassis only or as a complete lockset.